Convert string to int without using library function in c

Convert string to int without using library function in c

Input:

Enter the string: 1234

Output:

The string 1234 converted to number 1234

Implementation:

#include <stdio.h> #include <stdlib.h> #include <string.h> int main(void) { char *s; int n=0,i=0; s=(char*)malloc(sizeof(char)*1000000); printf("Enter the string:\n"); scanf("%s",s); while(*(s+i)) { n=(n*10)+((int)*(s+i)-(int)'0'); i++; } printf("The string %s converted to number %d",s,n); return 0; }